> -----Original Message----- > From: fio-owner@xxxxxxxxxxxxxxx [mailto:fio-owner@xxxxxxxxxxxxxxx] On > Behalf Of Bruce Cran > Sent: Monday, September 24, 2012 6:28 AM > To: Jeffrey McVay (jmcvay) > Cc: fio@xxxxxxxxxxxxxxx; Jens Axboe > Subject: Re: FIO 2.0.9 for Windows Server 2008 RC1 SP2 reports extreme > latencies > > On 24/09/2012 06:41, Jeffrey McVay (jmcvay) wrote: > > > > On windows runing 4kB random Writes to a ramdisk with numjobs=4 and > > iodepth=64 FIO reports clat and lat maximums times that match the > > runtime of the test. Changing the numjobs=1 and iodepth=1 yields max > > latencies that meet expectations. As a further sanity test I ran > > similar workloads using IOMeter with max response times that were in > > line with expectations. > > > > To reproduce: > > > > 1.Download and install the freeware version of Dataram ramdisk from > > http://memory.dataram.com/products-and-services/software/ramdisk > > > > 2.Run FIO 2.0.9 with PhysD1_Fio_4kRandWr_4x64 > > > > 3.Notice the max entries for clat and lat > > > > 4.For comparison run FIO with PhysD1_Fio4kRandWr_1x1 > > > > Attached are the FIO jobfiles, latency logs for the two FIO runs, > > IOMeter ICF files, IOMeter csv files, and screenshots comparing > > similar runs of FIO and IOMeter. > > > > Thanks. I've replicated the problem and will work out what's going > wrong. > Any updates? Is there anything I can do to help? I have a personal goal to convert our IOMeter testing to FIO. --Jeff > -- > Bruce Cran > -- > To unsubscribe from this list: send the line "unsubscribe fio" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
